As we previously reported, a van plowed into crowds of pedestrians as part of a terrorist attack on Thursday. While a death toll has yet to be confirmed, it's believed that anywhere between one and 13 people have lost their lives due to the terror-driven incident. Countless others have been injured.

Thus, many celebrities and politicians have already taken to Twitter to weigh in on the horrific scene and made sure to pay tribute to those affected by the attack. Be sure to take a peek at their kind words for yourself (below).

Cornell is best known for pioneering the grunge rock scene with his band Soundgarden,which came out of Seattle in the '90s. So it's no wonder several celebs have since flocked to Twitter to pay tribute to the Black Hole Sun artist — including Elton John, Gavin Rossdale, St. Vincent, etc. So sad.

Be sure to take a look at the kind words Hollywood has for the late rocker (below).

On Thursday, Elijah Wood stopped by The Tonight Show to promote his movie, I Don't Feel At Home In This World Anymore, which just dropped on Netflix. However, The Lord Of The Rings alum ended up dishing all about his pal Nick Viall's current stint on The Bachelor. We repeat, Elijah is friends with Nick. WHAT????

Of course, the late night host had a MILLION questions for Wood — mainly about Corinne and her platinum vagine. Apparently, the industry vet met Viall through their mutual friend Kyle and knew the businessman was going to be the ABC dating show's lead before it was even announced. Mind blown!

And while the 36-year-old wasn't initially a fan of TheBachelor, he is now defending that his friend's intentions on the show are pure. The A-lister explained to Jimmy:

"Here's the thing about Nick. I think a lot of people question whether he is real or if it's really real him on the show, in the way that he's presenting himself, and that is him. He's a very genuine individual, he's got a lot of integrity. I can unequivocally say that."

Awwwww! Be sure to ch-ch-check out the full HIGHlarious HIGHlight for yourself (below)!

Taking to Instagram to remember the time he and his "fellowship" members — Ian McKellen, Viggo Mortensen, Elijah Wood, Dominic Monaghan, and Billy Boyd — got tattoos of the Elvish number nine in honor of the film, the 39-year-old posted:

"When somebody approaches you and says, 'Hey, this is a Hollywood party where you get to hang out with the powerful people in Hollywood,' well that sounds like a great opportunity."

In fact, this sit down comes shortly after Elijah Wood discussed "organized" child abuse and pedophilia in the entertainment industry — a story which he has since recanted. However, the 44-year-old believes there was in fact a type of network that allowed executives to prey on child stars.